Arguably one of the easiest quests available, all you have to do is show up at Gamlen's house in Lowtown. This is a location you need to be familiar with since you'll get other quests here too. Keep an eye out for an exclamation point on this location during the game. You can also come here for free healing whenever you want.

The Birthright quest is unlocked after you complete this quest (i.e. get there). Be sure to check out the "Writing Desk" since you'll get mail there and unlock the Bait and Switch quest. The Writing Desk is also related to the Act of Mercy quest and The Black Emporium premium quest.